Lincoln D E, Couvet D
Department of Biology, University of South Carolina, 29208, Columbia, SC, USA.
Oecologia. 1989 Jan;78(1):112-114. doi: 10.1007/BF00377205.
The carbon supply of peppermint plants was manipulated by growing clonal propagules under three carbon dioxide regimes (350, 500 and 650 μl l). Feeding by fourth instar caterpillars of Spodoptera eridania increased with elevated CO hostplant regime, as well as with low leaf nitrogen content and by a high proportion of leaf volatile terpenoids. Leaf weight increased significantly with the increased carbon supply, but the amount of nitrogen per leaf did not change. The amount of volatile leaf mono-and sesquiterpenes increased proportionately with total leaf dry weight and hence was not influenced by CO supply. These results are consistent with ecological hypotheses which assume that allocation to defense is closely regulated and not sensitive to carbon supply per se.
通过在三种二氧化碳浓度条件（350、500和650微升/升）下培养薄荷植物的克隆繁殖体，来控制其碳供应。南方黏虫四龄幼虫的取食量随着寄主植物二氧化碳浓度升高、叶片低氮含量以及高比例的叶片挥发性萜类物质而增加。随着碳供应增加，叶片重量显著增加，但单叶含氮量没有变化。叶片挥发性单萜和倍半萜的含量与叶片总干重成比例增加，因此不受二氧化碳供应的影响。这些结果与生态学假说一致，该假说认为对防御的资源分配受到严格调控，且对碳供应本身不敏感。
